ooze"soft mud," O.E. wase "soft mud, mire," from P.Gmc. *waison (cf. O.S. waso "wet ground, mire," O.N. veisa "pond of stagnant water"), from PIE *weis- "to flow" (cf. L. virus "slime, poison," and possibly also viscum "birdlime, mistletoe"). Modern spelling is mid-1500s.